23/09/2026
Glaucoma is not simply about โhow clearly you can see.โ
It is about what is happening inside the eye.
๐๏ธ WHAT HAPPENS INSIDE THE EYE?
The eye continuously produces a clear fluid called aqueous humour. This fluid must drain properly through the eyeโs drainage system.
When drainage is impaired, intraocular pressure (IOP) may rise and can increase the risk of damage to the optic nerve.
But glaucoma is more complex than pressure alone.
๐ WHAT IS EYE PRESSURE?
Eye pressure is the pressure created by the fluid inside the eye. Measuring IOP is an important part of a glaucoma assessment โ but a high pressure reading does not automatically mean someone has glaucoma, and glaucoma can also occur with pressures in the normal range.
๐ฌ WHAT IS THE OPTIC NERVE?
Think of it as the communication cable between your eye and brain. Glaucoma can progressively damage the optic nerve, leading to permanent vision loss.
๐ AND WHAT ABOUT THE ANGLE?
The drainage angle is the area where the iris meets the cornea. It contains the structures responsible for draining aqueous humour.
An ophthalmologist may examine the angle to understand whether it is open, narrow or closed, and whether there are other features that may influence diagnosis and treatment.
That is why a glaucoma evaluation can involve more than a routine vision test.
Depending on the individual, assessment may include:
โข Eye pressure measurement
โข Optic nerve examination
โข Visual field testing
โข OCT and retinal/optic nerve imaging
โข Assessment of the drainage angle
โข Other tests based on the patient's risk factors and clinical findings
The most important point?
Glaucoma can develop gradually and may cause significant optic nerve damage before a person notices obvious changes in everyday vision.
And once optic nerve tissue is damaged, the lost vision generally cannot be restored.
The goal of early detection and appropriate treatment is to protect the vision you still have and slow further damage.
DONโT JUST CHECK HOW YOU SEE.
UNDERSTAND WHATโS HAPPENING INSIDE YOUR EYES.
If you are at risk of glaucoma, have a family history, or have been advised to undergo glaucoma testing, speak with an ophthalmologist about a comprehensive eye examination.
Know your pressure.
Know your angle.
Know your optic nerve.
Know your eyes.
GlaucEd โ Glaucoma Awareness Foundation
Creating awareness. Educating people. Encouraging early detection and informed eye care.